Marry above thy match, and thou'lt get a master.
Franklin warns that marrying someone of substantially higher social or economic standing may create an unequal relationship. To marry “above thy match” means marrying into a higher rank or level of wealth, while gaining a “master” suggests becoming dependent on the more powerful partner rather than meeting as an equal.
The saying reflects the strong class distinctions and economic dependencies of Franklin’s period, when marriage could significantly affect status, property and social position. It should not be read as a general argument that people should marry only within their own social class. Its broader point concerns imbalance: when one partner possesses far greater wealth, status or influence, that difference can affect independence and decision-making within the relationship. Franklin therefore presents apparent social advancement as potentially carrying a cost in personal autonomy.